Short description: In Russian. Kostromin, Fedor Prokofievich. Drilling polygonal holes. Moscow Leningrad: Mashgiz, 1941 (Leningrad). You are welcome to reach out to us for a detailed description of the copies currently available. Delivery of this book may take longer than usual including extended processing and pre-shipping time, no expedited shipping is available. Please advise us if you have a set date or a deadline to receive your order.SKU5242767